android– 如何使NavigationView标头粘滞

概述是否可以在设计支持库NavigationView中使标题粘滞？<android.support.design.widget.NavigationViewandroid:id="@+idav_drawer"android:layout_width="wrap_content"android:layout_height="match_parent"android:layout_gravity=&q

是否可以在设计支持库NavigationVIEw中使标题粘滞？

<androID.support.design.Widget.NavigationVIEw    androID:ID="@+ID/nav_drawer"    androID:layout_wIDth="wrap_content"    androID:layout_height="match_parent"    androID:layout_gravity="start"    app:headerLayout="@layout/nav_header"    app:menu="@menu/nav_drawer"        />

编辑：

到目前为止,我的尝试导致了这一点

覆盖NavigationVIEw小部件并添加新方法：

public class CustomNavigationVIEw extends NavigationVIEw {public CustomNavigationVIEw(Context context) {    super(context);}public CustomNavigationVIEw(Context context, AttributeSet attrs) {    super(context, attrs);}public CustomNavigationVIEw(Context context, AttributeSet attrs, int defStyle) {    super(context, attrs, defStyle);}// Inflates header as a child of NavigationVIEw, on top of the normal menupublic voID createheader(int res) {    LayoutInflater inflater = LayoutInflater.from(getContext());;    VIEw vIEw = inflater.inflate(res, this, false);    addVIEw(vIEw);}

}

然后将其添加到活动的onCreate：

CustomNavigationVIEw navigationVIEw = (CustomNavigationVIEw) findVIEwByID(R.ID.your_navigation_vIEw);navigationVIEw.createheader(R.layout.your_header);

这样可以达到预期的效果(如果有点不好意思)但是当菜单项位于标题下方时你仍然可以点击它们,有什么想法可以解决这个问题吗？

解决方法:

经过大量的实验,我得到了一些有用的东西……非常Hacky,我很乐意听到你需要改进的建议！

覆盖的NavigationVIEw

public class CustomNavigationVIEw extends NavigationVIEw {public CustomNavigationVIEw(Context context) {    super(context);}public CustomNavigationVIEw(Context context, AttributeSet attrs) {    super(context, attrs);}public CustomNavigationVIEw(Context context, AttributeSet attrs, int defStyle) {    super(context, attrs, defStyle);}// Consumes touch in the NavigationVIEw so it doesn't propagate to vIEws belowpublic boolean ontouchEvent (MotionEvent me) {    return true;}// Inflates header as a child of NavigationVIEwpublic voID createheader(int res) {    LayoutInflater inflater = LayoutInflater.from(getContext());    VIEw vIEw = inflater.inflate(res, this, false);    // Consumes touch in the header so it doesn't propagate to menu items below    vIEw.setontouchListener(new OntouchListener() {        @OverrIDe        public boolean ontouch(VIEw v, MotionEvent event){            return true;        }    });    addVIEw(vIEw);}// positions and sizes the menu vIEwpublic voID sizeMenu(VIEw vIEw) {    // Height of header    int header_height = (int) getResources().getDimension(R.dimen.nav_header_height);    // Gets required display metrics    displayMetrics displayMetrics = getResources().getdisplayMetrics();    float screen_height = displayMetrics.heightPixels;    // Height of menu    int menu_height = (int) (screen_height - header_height);    // Layout params for menu    LayoutParams params = new LayoutParams(            LayoutParams.MATCH_PARENT,            LayoutParams.WRAP_CONTENT);    params.gravity = Gravity.BottOM;    params.height = menu_height;    vIEw.setLayoutParams(params);}

}

这是在主要活动的onCreate

// Inflates the nav drawer    CustomNavigationVIEw navigationVIEw = (CustomNavigationVIEw) findVIEwByID(R.ID.your_nav_vIEw);    navigationVIEw.createheader(R.layout.your_nav_header);    // sizes nav drawer menu so it appears under header    VIEwGroup parent = (VIEwGroup) navigationVIEw;    VIEw vIEw = parent.getChildAt(0);    navigationVIEw.sizeMenu(vIEw);

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